Cross-arm for towers.



PATENTED JUNE 18,1907.

LA VBRNE W. NOYES. GROSS ARM FOR TOWERS.

APPLICATION FILED JULY 2, 190a.

LA VERNE w. NOYES, OF orncAco, rumors.

CROSS-ARM FOR TOWERS.

Specification of, Letters Patent.

Patented June 18, 1907.

. Application filed July 2,1906. Serial 324,439.

1 0 all whom it may concern.-

Be it known that 1, LA VERNE W. NoYEs, a citizen of the United States,residing at Chicago, 1n the county of Cook and State of Illinois, haveinvented new and useful Improve ments in Cross-Arms for Towers, of whichthe following is a-full, clear, concise, and exact description,reference being had to the accompan in drawing, forming a part of thisspeci cation. I

My invention relates to improvements in towers and particularl to towersused for electrical transmission 'nes, my object being to provide atower having suitable means for carrying the electrical transmissionwires.

Other features of my invention will appear in the specification andappended claims.

I have illustrated my invention in the drawings forming a part of thisspecification, and in which Figure 1 is a side elevation of the upperportion of my tower; Fig. 2 is a sectional view taken "on the line 2-2of Fig. 1; Fi 3 is a sectional view taken on line 33 of Fig. 1; and,Fig. 4 is a sectional view taken on the line 4-4 of Fi 3.

In the preferred embodiment of my inventlon the post of my tower ispreferably formed of a plurality of converging an le irons or legs. Thispost may be the singe 0st of a three-leg tower, in which the angle irons1, 2 and 3 are continued and form the legs of the tower, or this postmay be one of a plurality of posts formed on a suitable base of anycharacter. The converging le s 1, 2 and 3 of the posts are preferablyinter aced at their convergin point and are bound together by suitable 0amps 4 and 5. Suitable braces 6 are arran ed at intervals along the legswhich pro erly race the same, and tie the same toget er 1nt0 a umtarystructure. At the o1nt of convergence of the legs 1, 2 and 3,

ormed of angle lrons, a socket is formed, into which are arranged to befitted a pair of socket-pieces 7. and 8. These socket-pieces have theirouter sides formed to conform to the shape of the socket formed by theconvergi ends of the legs 1, 2 and 3 and have on thelr inner] facessemi-circular recesses 9, 1n which areada ted to fit a portion of thecross-arm 10 and a portion of. the vertical arm 11. vertical arm ispreferably formed of angle iron, having its upper end flattened as at12, to receive a wire and its lower end rounded to form a semi-circularportion 13, arranged to fit'in the socket formed by the recesses 9 inthe blocks 7 and S, and around the cross-arm 10. arm is of peculiarformation and is preferably formed of iron pipe having an intermediatevertical ortion 14, which is clamped between the bloc {S 7 and 8, andsubstantially horizontal end-portions 15 and 16 ,which support at theirouter ends insulators 17 and 18. These insulators may be supported inany desired manner and are here shown as being supported upon suitablevertical posts 19 and 20, which are bolted in openings formed in theends 15 and 16. At a lower point on the tower, a second cross arm 21 isalso secured which, like the cross-arm 10, is formed of iron pipe andhas its inner end flattened and bolted to the legs 3 of the 0st of thetower. An intermediate portion 0 the cross-arm 21 rests u on and issecured to one of the horizontal races 6 of the tower, bein secured inposition by a strap or sta le 22, w 'ch has its 0 posite ends passing tou h openings in t e brace 6, and provided with bolts 23, to secure thesame in position. The outer end of the cross-arm 21 also carries aninsulator pin 24, which is secured upon a vertical post 25, in the samemanner as the insulator pin 17.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. The combination with the post of a tower, of a. cross-arm thereforhaving a portion by which it is supported substantially at right anglesto the remainder thereof, and a second arm having one end connected toone leg of the post and an intermediate portion secured to and supportedby one of the braces of the tower.

'2. The combination with the post of a tower, of a hollow cylindricalcross-arm therefor having one portion thereof connected to one leg ofthe tower, and an-intermediate portion supported by and secured to oneofthe braces of the post.

3. The combination with the post of a tower, of a cross-arm thereforhaving a substantially vertical intermediate portion bywhich it issupported in position, and substantially horizontal end-portions.

4. The combination with the post of a tower, of a cross-arm thereforhaving an in.- termediate portion by which it is supported extendingsubstantially at right angles to its end-portions.

5. The combination with the post of a The crosstower,-of a cross-armtherefor, cylindrical in cross section and having an intermediateportion by which it is supported extending substantially at right anglesto the end-porthereof clamped between said posts.

7. The combination with a plurality of converging posts of a tower, of acrossarm therefor having a portion thereof clamped between said posts atthe point where they converge and extending substantially at rightangles to the remaining portion of the arm. 7 V

In witness whereof, I have hereunto subscribed my name in the presenceof two witnesses.

LA VERNE W. NOYES.

Witnesses:

D. R.'SCHOLES, L. WALKER.

